In the body of every human being, whether male or female, the amount of the substances is actually the same, but you know who more frequently orgasms, right?
Oxytocin creates multiple effects, including the formation of maternal behavior, stimulating muscle flexibility during a contraction when you give birth, also accelerating the release of breast milk. Oxytocin is also called the love hormone because it encourages your desire to stroke and be stroked, to caress and be caressed, to love and be loved, to cherish and be cherished, as well as to bind yourself, though not always in a sexual relationship.
Oxytocin contributes to create a sense of relaxing after you experience the joy.
Prolactin has a similar role. The hormone is made in the pituitary gland whose main function is to produce milk. Prolactin is believed to contribute lowering lust after you have an orgasm. When you sleep, prolactin is achieving the high levels.
In tumor patients, it's often found excess of this hormone that causes continuous sleep.
Meanwhile, GABA and endorphin also cause a feeling of calm, so you easily fall asleep after sex.
When orgasming, he releases energy, whereas you experience the opposite, inside bursting.
When reaching a climax, he uses every muscle glycogen to produce energy. As a result, he'll feel tired and sleepy. Well, because he has more muscle mass than you, he's more tired.
You don't always reach orgasm, so a variety of hormones mentioned above ain't produced.
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